There is a way to do this, and now that I'm back at my main PC, I can show you. Here's the demo:
The Capx is very simple. It ajax requests a php file that I've set up to return the current US Eastern date/time. If you have your own server set up, you can create a similar set up for your own game. Here's the code used in the php file :
echo("$datetime[hours]:$datetime[minutes]:$datetime[seconds] $datetime[mon]/$datetime[mday]/$datetime[year] ");
I hope this helps.